Sunderland officials have launched an investigation after three players were alleged to have taken part in a filmed sex session.Keeper Ben Alnwick, midfielder Liam Lawrence and striker Chris Brown are reported to have appeared in the film with a mystery woman. The players can expect to be in trouble with chairman Niall Quinn and manager Roy Keane if they are found to have breached the club´s disciplinary rules.Sunderland marketing and communications director Lesley Callaghan, speaking on behalf of the Board, said: "The behaviour of any individual that adversely affects the image or good name of Sunderland Football Club is obviously disappointing, and we will be handling this matter internally."
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